Kaley Cuoco Birthday Special: 10 Hilarious The Big Bang Theory Quotes of the Star That Proved Penny Was the Smartest and Funniest of the Gang!

Kaley Cuoco is best known for starring in The Big Bang Theory as Penny. To celebrate her birthday, here are 10 of her best quotes as Penny.

Kaley Cuoco throughout the years has come into her own as a star. With her starring in anything you're certified to have a good time as through her comedic timing and amazing screen persona, she will definitely leave you in a fit of laughter. From her recent roles like Harley Quinn and more, it's clear just how much Kaley has grown as an actor over the years, yet we will always have a soft spot her portrayal of Penny in The Big Bang Theory. Kaley Cuoco Reveals She Had To Keep Her Relationship With The Big Bang Theory’s Johnny Galecki a Secret.

Funny and charming, Cuoco's portrayal of Penny throughout the entirety of The Big Bang Theory was a huge highlight. Often being the funniest out of the group, and sometimes even being the smartest, Cuoco was a riot in this role. So to celebrate Kaley Cuoco's 37th birthday, here are some of her best quotes from the show. Kaley Cuoco Is Expecting Baby Girl With Boyfriend Tom Pelphrey (View Pics).

"My Barbie..."